# Copyright (C) 2020 The Khronos Group Inc.
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
#    Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#    Redistributions in binary form must reproduce the above
#    copyright notice, this list of conditions and the following
#    disclaimer in the documentation and/or other materials provided
#    with the distribution.
#
#    Neither the name of The Khronos Group Inc. nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

set(SOURCES ossource.cpp ../osinclude.h)

add_library(OSDependent STATIC ${SOURCES})
set_property(TARGET OSDependent PROPERTY FOLDER glslang)
set_property(TARGET OSDependent PROPERTY POSITION_INDEPENDENT_CODE ON)

# MinGW GCC complains about function pointer casts to void*.
# Turn that off with -fpermissive.
if(${CMAKE_CXX_COMPILER_ID} MATCHES "GNU")
    target_compile_options(OSDependent PRIVATE -fpermissive)
endif()

if(WIN32)
    source_group("Source" FILES ${SOURCES})
endif()

if(ENABLE_GLSLANG_INSTALL)
    install(TARGETS OSDependent EXPORT glslang-targets)

    # Backward compatibility
    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/OSDependentTargets.cmake" "
        message(WARNING \"Using `OSDependentTargets.cmake` is deprecated: use `find_package(glslang)` to find glslang CMake targets.\")

        if (NOT TARGET glslang::OSDependent)
            include(\"\${CMAKE_CURRENT_LIST_DIR}/../../${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}/glslang-targets.cmake\")
        endif()

        add_library(OSDependent ALIAS glslang::OSDependent)
    ")
    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/OSDependentTargets.cmake" DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake)
endif()
